Update to the exynos-mem security issue from Samsung I9300 Update7

p2: includes the secmem changes as well as Andreis MFC addition  as well

Change-Id: I144c2b42586f07b737fba09742315683cbab36ef

Conflicts:

	arch/arm/mach-exynos/mach-midas.c
	drivers/char/exynos_mem.c
	fs/fuse/file.c